Semi Truck Electrical System Testers
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Cal-Van Tools® - 12 V Quick Ripple Tester (73)Universal 12 V Quick Ripple Tester by Cal-Van Tools®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering...The Quick Ripple Tester is designed to easily and efficiently test alternators for a variety of issues including ripple through the DC outlet cigarette lighterAllows the user to test an alternator for bad diodes bad stators and intermittent diodes or stators without ever lifting the hood$51.24In Stock - Ships in 24 to 48 hrs - Cal-Van Tools® - 12 V/24 V Pro Relay Circuit Tester (76)Universal 12 V/24 V Pro Relay Circuit Tester by Cal-Van Tools®. The 76 Relay Circuit Pro is a tool that can test an entire circuit from the battery to the component in question as well as determining if the relay itself is functioning...Designed for your maintenance needsMade from high-grade material for a long lifespan$170.06In Stock - Ships in 24 to 48 hrs
- Dorman® - 1" Insulated Alligator Clips (85650)Universal 1" Insulated Alligator Clips by Dorman®. Dorman offers a comprehensive line of Alligator Clips for almost any automotive electrical repair. All Alligator Clips are constructed of high-quality materials for long-lasting...Conveniently packaged in a variety of piece counts to assist with both small and large projectsAlso suitable for a broad range of household, industrial and commercial uses$1.39In Stock - Ships within 24 hrs
- Dorman® - 1-1/2" Alligator Clip with Screw (85652)Universal 1-1/2" Alligator Clip with Screw by Dorman®. Dorman offers a comprehensive line of Alligator Clips for almost any automotive electrical repair. All Alligator Clips are constructed of high-quality materials for long-lasting...Conveniently packaged in a variety of piece counts to assist with both small and large projectsAlso suitable for a broad range of household, industrial and commercial uses$1.52In Stock - Ships within 24 hrs
- Dorman® - 10' Test Leads (84610)Universal 10' Test Leads by Dorman®. Dorman's retractable test leads are indispensable for having on hand in the shop or the garage. Save time by keeping them visible and available: the magnetic backing on the case firmly affixes to...Essential for reliable testing of electrical circuitsEasy to use$7.82In Stock - Ships within 24 hrs
- Dorman® - 12 V Alternator and Battery Tester (84502)Universal 12 V Alternator and Battery Tester by Dorman®. Dorman offers a comprehensive line of Electrical Multi-Testers for almost any automotive repair. All Electrical Multi-Testers are constructed of high-quality materials for...Testers light up and/or buzz to indicate testing resultDurably designed for a long service life$6.76In Stock - Ships within 24 hrs
- Dorman® - 12 V Circuit Tester with LCD Display (88058)Universal 12 V Circuit Tester with LCD Display by Dorman®. Dorman offers a comprehensive line of Electrical Multi-Testers for almost any automotive repair. All Electrical Multi-Testers are constructed of high-quality materials for...Testers light up and/or buzz to indicate testing resultDurably designed for a long service life$14.26In Stock - Ships within 24 hrs
- Dorman® - 15" Multi Purpose Ground Strap (60213)Universal 15" Multi Purpose Ground Strap by Dorman®. Dorman offers a line of Body Electrical Ground Straps for a wide range of applications. All Body Electrical Ground Straps are constructed of high-quality materials for long-lasting...Strap measures 15" in length to cover most usesMade of copper for high conductivity$4.97In Stock - Ships within 24 hrs
- Dorman® - 3/8" Copper Ring Lugs with Insulation (86184)Universal 3/8" Copper Ring Lugs with Insulation by Dorman®. Dorman offers a comprehensive line of Copper Lugs for almost any automotive repair. All Copper Lugs are constructed of high-quality materials for long-lasting durability.Conveniently packaged in a variety of piece counts to assist with both small and large projectsAlso suitable for a broad range of industrial and commercial uses$2.91In Stock - Ships within 24 hrs
- Dorman® - 399-piece Automotive Electrical Repair Kit with Case (86689C)Universal 399-piece Automotive Electrical Repair Kit with Case by Dorman®. Electrical Diagnostic and Repair Kit contains an assortment of the most popular items needed to complete electrical repairs. Conveniently packaged in a reusable...A cost-efficient and time-saving alternative to purchasing each component separatelyConveniently packaged in a durable plastic tray for protected storage$38.40In Stock - Ships within 24 hrs
- Dorman® - 9" Computer Safe Test Probe (86602)Universal 9" Computer Safe Test Probe by Dorman®. For accurate testing of voltage and amperage sensitive circuits, use Diagnostic Test Probes. Replacement is constructed of high-quality materials for durability and a longer service life.Quality plastic, copper, and aluminum constructionSafe to use on computer controlled circuits$21.27In Stock - Ships within 24 hrs
- Dorman® - Un-insulated Alligator Clip Leads (85654)Universal Un-insulated Alligator Clip Leads by Dorman®. Dorman offers a comprehensive line of Alligator Clips for almost any automotive electrical repair. All Alligator Clips are constructed of high-quality materials for long-lasting...Many different lengths availableConveniently packaged in a variety of piece counts to assist with both small and large projects$2.31In Stock - Ships within 24 hrs
- Electronic Specialties® - 12 V Digital Electrical System and Battery Tester with Printer (726)Universal 12 V Digital Electrical System and Battery Tester with Printer (726) by Electronic Specialties®. An accurate battery and electrical 3 in 1 system tester (6 & 12 Volt Battery Tester+12V Start/Stop Battery Test, 12 & 24 Volt...Wide Testing Range from 40 to 2,000 CCABuilt-in Printer - print the results for permanent service record$224.00In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - 12 V Pro Relay Tester (191)Universal 12 V Pro Relay Tester by Electronic Specialties®. Relay Buddy is a quick go / no-go tester for the most common automotive relays. With the included adapters, Relay Buddy now tests 5 different relay types and also tests...Designed for your maintenance needsMade from high-grade material for a long lifespan$124.18In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - 12 V Relay Tester (190)Universal 12 V Relay Tester by Electronic Specialties®. Relay Buddy is a quick go / no-go tester for the most common automotive relays. It provides you with an indication of the general health and functioning of the relay switch...Quick off-the-car relay testerChecks relay coil and switch contacts$53.93In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - 2 Pieces Replacement Thermal Printer Papers (726-1)Universal 2 Pieces Replacement Thermal Printer Papers by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Designed to help to get your job done rightManufactured utilizing the highest quality materials$4.85In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - 70-Piece Diagnostic Test and Terminal Set (846)Universal 70-Piece Diagnostic Test and Terminal Set by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Clear storage case included & helps you stay organizedWorks with Multimeters and digital scopes$143.78In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Essentials Of Electrical Power Generation (183)Universal Essentials Of Electrical Power Generation by Electronic Specialties®. This is Dan Sullivan's 2nd book, which covers everything you need to know regarding Electric Power Generation from RV generators to large Gensets. Dan lends...Designed for your maintenance needsMade from high-grade material for a long lifespan$39.19In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Fuse Buddy™ 12 V/24 V Relay Tester (316)Universal Fuse Buddy™ 12 V/24 V Relay Tester by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Is it a circuit problem or a relay problem?Relay Fuse Buddy can help diagnose the case$81.72In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Fuse Buddy™ 30 A Mini Tester (305M)Universal Fuse Buddy™ 30 A Mini Tester by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance...Great for motor blowersOriginal fuse is replaced in-line during testing, thereby maintaining circuit protection$27.60In Stock - Ships within 24 hrs
- Electronic Specialties® - Fuse Buddy™ ATC Current Loop (308B)Universal Fuse Buddy™ ATC Current Loop (308B) by Electronic Specialties®. Just clamp your current probe over the loop to access the amperage draw through a fused circuit. Easy testing access, plugs right into fuse socket, no more hand...Designed to help to get your job done rightManufactured utilizing the highest quality materials$13.55In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Fuse Buddy™ Current Loop Kit (309A)Universal Fuse Buddy™ Current Loop Kit by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance...Plug in Fuse Buddy and read circuit amp drawsEasy test connection into fused circuits$32.99In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Fuse Buddy™ Mini Current Loop (307M)Universal Fuse Buddy™ Mini Current Loop (307M) by Electronic Specialties®. Just clamp your current probe over the loop to access the amperage draw through a fused circuit. Easy testing access, plugs right into fuse socket, no more...Designed to help to get your job done rightManufactured utilizing the highest quality materials$13.55In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - LOADpro™ 12 V/48 V Dynamic Test Leads (185)Universal LOADpro™ 12 V/48 V Dynamic Test Leads by Electronic Specialties®. This new version of LOADpro is capable of loading circuits as high as 48 volts. 185 can be deployed on Electrical System ranging from 12 volts up to 48 volts....Use on 12V to 48V circuitsPerforms voltage drop test with the push of a button$60.11In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Relay Buddy™ 12 V/24 V Pro Relay Tester (192)Universal Relay Buddy™ 12 V/24 V Pro Relay Tester by Electronic Specialties®. Relay Buddy 12/24 is a quick go / no-go tester for the most common automotive relays. This new version Relay Buddy tests both 12 and 24 volt relays. If the...Quick off-the-car relay testerChecks relay coil & switch contacts$61.13In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Relay Buddy™ 12 V/24 V Pro Relay Tester Kit (193)Universal Relay Buddy™ 12 V/24 V Pro Relay Tester Kit by Electronic Specialties®. Relay Buddy 12/24 Pro Test Kit tests five different relays. Relay Buddy is a quick go / no-go tester for the most common automotive relays and this new...Quick off-the-car relay testerChecks relay coil & switch contacts$135.28In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Troubleshooting Book (184)Universal Troubleshooting Book by Electronic Specialties®. Complete 200-page guide to all aspects of electrical equipment troubleshooting - explained in a way that makes it useful in the store. Written by a mechanic for real, practice...Batteries/TestingRelays, potentiometers, resistors, and solenoids$48.32In Stock - Ships in 24 to 48 hrs
- FJC® - 6 V/12 V 125 A Battery Tester (45107)Universal 6 V/12 V 125 A Battery Tester (45107) by FJC®. The Power Division of FJC is an industry-leading manufacturer and distributor of power electronic products and systems for mobile markets including battery testers, chargers,...Test car / truck batteries of current draw, voltage, and alternator performanceQuick 10 second load test$36.28In Stock - Ships within 24 hrs
- FJC® - 6 V/12 V/24 V 1000 A Carbon Pile Battery Load Tester (45118)Universal 6 V/12 V/24 V 1000 A Carbon Pile Battery Load Tester (45118) by FJC®. The Power Division of FJC is an industry-leading manufacturer and distributor of power electronic products and systems for mobile markets including battery...Tests alternators, regulators & startersLarge, easy-to-read gauges$398.54In Stock - Ships in 24 to 48 hrs
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